You are randomly selecting cards from a deck of cards. What is the probability of pulling a king, replacing it, and then pulling
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Hello there.
To answer this question, we need to remember some properties about the vertex of quadratic functions.
Let . Its vertex can be found on the coordinates
such that
and
, in which
.
Using the coefficients given by the question, we get that:
Thus, we have:
So the statement is true, because the coordinate of the vertex of the function is equal to